File patch-wrapper-rpm.diff of Package quilt

From: Andreas Gruenbacher <andreas.gruenbacher@gmail.com>
Date: Thu, 1 Dec 2016 11:15:48 +0100
Subject: patch-wrapper: Make the patch names that quilt shows more convenient
Git-commit: 1cde19389bc5805da713361ac32869388e42f592
Patch-mainline: yes

When operating on an rpm package, create links to the rpm sources and
build directories and make patch names relative to these links. This is
more convenient than using ugly absolute paths.

--- a/bin/patch-wrapper.in
+++ b/bin/patch-wrapper.in
@@ -28,7 +28,7 @@ fi
 
 backup_files()
 {
-    declare dir=${QUILT_PC:-.pc}/$patch
+    declare dir=${QUILT_PC:-.pc}/$name
 
     if [ "$backup_mode" = --backup-if-mismatch ]
     then
@@ -201,39 +201,56 @@ then
 fi
 
 quilt_patches=${QUILT_PATCHES:-patches}
-dir=$(dirname "$quilt_patches/$patch")
-mkdir -p "$dir"
-if [ -e "$patch" ]
+
+if [ "${patch#$RPM_SOURCE_DIR}" != "$patch" ]
+then
+    name=SOURCES/${patch#$RPM_SOURCE_DIR/}
+    if [ ! -e "$quilt_patches/SOURCES" ]
+    then
+	mkdir -p "$quilt_patches"
+	ln -s $RPM_SOURCE_DIR "$quilt_patches/SOURCES"
+    fi
+elif [ "${patch#$RPM_BUILD_DIR}" != "$patch" ]
 then
+    name=BUILD/${patch#$RPM_BUILD_DIR/}
+    if [ ! -e "$quilt_patches/BUILD" ]
+    then
+	mkdir -p "$quilt_patches"
+	ln -s $RPM_BUILD_DIR "$quilt_patches/BUILD"
+    fi
+else
+    name=${patch#/}
+    dir=$(dirname "$quilt_patches/$name")
+    mkdir -p "$dir"
+
     if [ "${patch:0:1}" = / ]
     then
-	ln -s "$patch" "$quilt_patches$patch"
-	patch=${patch#/}
+	ln -s "$patch" "$quilt_patches/${name#/}"
     else
-	while ! [ "$dir/$updir$patch" -ef "$patch" ]
+	while ! [ "$dir/$updir$name" -ef "$patch" ]
 	do
 	    updir=$updir../
 	    [ ${#updir} -gt 96 ] && break
 	done
-	if [ "$dir/$updir$patch" -ef "$patch" ]
+	if [ "$dir/$updir$name" -ef "$patch" ]
 	then
-	    ln -s "$updir$patch" "$quilt_patches/$patch"
+	    ln -s "$updir$patch" "$quilt_patches/$name"
 	fi
     fi
 fi
 
 if [ "$opt_strip" = -p1 ]; then
-    echo "$patch"
+    echo "$name"
 else
-    echo "$patch $opt_strip"
+    echo "$name $opt_strip"
 fi >> $quilt_patches/series
 
-$PATCH "${new_options[@]}" --backup --prefix "${QUILT_PC:-.pc}/$patch/" \
+$PATCH "${new_options[@]}" --backup --prefix "${QUILT_PC:-.pc}/$name/" \
     | backup_files
 status=${PIPESTATUS[0]}
 if [ $status -eq 0 ]
 then
-    dir=${QUILT_PC:-.pc}/$patch
+    dir=${QUILT_PC:-.pc}/$name
     if [ ! -e "$dir" ]
     then
 	mkdir -p "$dir"
@@ -243,6 +260,6 @@ then
     then
 	echo 2 > ${QUILT_PC:-.pc}/.version
     fi
-    echo "$patch" >> "${QUILT_PC:-.pc}/applied-patches"
+    echo "$name" >> "${QUILT_PC:-.pc}/applied-patches"
 fi
 exit $status